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-rw-r--r--include/linux/bpf.h10
-rw-r--r--include/uapi/linux/bpf.h10
-rw-r--r--kernel/bpf/arraymap.c7
-rw-r--r--kernel/bpf/devmap.c9
-rw-r--r--kernel/bpf/hashtab.c19
-rw-r--r--kernel/bpf/lpm_trie.c9
-rw-r--r--kernel/bpf/sockmap.c10
-rw-r--r--kernel/bpf/stackmap.c8
-rw-r--r--kernel/bpf/syscall.c14
9 files changed, 73 insertions, 23 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 1cc6c5ff61ec..55b88e329804 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -51,6 +51,7 @@ struct bpf_map {
u32 map_flags;
u32 pages;
u32 id;
+ int numa_node;
struct user_struct *user;
const struct bpf_map_ops *ops;
struct work_struct work;
@@ -264,7 +265,7 @@ struct bpf_map * __must_check bpf_map_inc(struct bpf_map *map, bool uref);
void bpf_map_put_with_uref(struct bpf_map *map);
void bpf_map_put(struct bpf_map *map);
int bpf_map_precharge_memlock(u32 pages);
-void *bpf_map_area_alloc(size_t size);
+void *bpf_map_area_alloc(size_t size, int numa_node);
void bpf_map_area_free(void *base);
extern int sysctl_unprivileged_bpf_disabled;
@@ -316,6 +317,13 @@ struct net_device *__dev_map_lookup_elem(struct bpf_map *map, u32 key);
void __dev_map_insert_ctx(struct bpf_map *map, u32 index);
void __dev_map_flush(struct bpf_map *map);
+/* Return map's numa specified by userspace */
+static inline int bpf_map_attr_numa_node(const union bpf_attr *attr)
+{
+ return (attr->map_flags & BPF_F_NUMA_NODE) ?
+ attr->numa_node : NUMA_NO_NODE;
+}
+
#else
static inline struct bpf_prog *bpf_prog_get(u32 ufd)
{
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 5ecbe812a2cc..843818dff96d 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -165,6 +165,7 @@ enum bpf_attach_type {
#define BPF_NOEXIST 1 /* create new element if it didn't exist */
#define BPF_EXIST 2 /* update existing element */
+/* flags for BPF_MAP_CREATE command */
#define BPF_F_NO_PREALLOC (1U << 0)
/* Instead of having one common LRU list in the
* BPF_MAP_TYPE_LRU_[PERCPU_]HASH map, use a percpu LRU list
@@ -173,6 +174,8 @@ enum bpf_attach_type {
* across different LRU lists.
*/
#define BPF_F_NO_COMMON_LRU (1U << 1)
+/* Specify numa node during map creation */
+#define BPF_F_NUMA_NODE (1U << 2)
union bpf_attr {
struct { /* anonymous struct used by BPF_MAP_CREATE command */
@@ -180,8 +183,13 @@ union bpf_attr {
__u32 key_size; /* size of key in bytes */
__u32 value_size; /* size of value in bytes */
__u32 max_entries; /* max number of entries in a map */
- __u32 map_flags; /* prealloc or not */
+ __u32 map_flags; /* BPF_MAP_CREATE related
+ * flags defined above.
+ */
__u32 inner_map_fd; /* fd pointing to the inner map */
+ __u32 numa_node; /* numa node (effective only if
+ * BPF_F_NUMA_NODE is set).
+ */
};
struct { /* anonymous struct used by BPF_MAP_*_ELEM commands */
diff --git a/kernel/bpf/arraymap.c b/kernel/bpf/arraymap.c
index d771a3872500..96e9c5c1dfc9 100644
--- a/kernel/bpf/arraymap.c
+++ b/kernel/bpf/arraymap.c
@@ -49,13 +49,15 @@ static int bpf_array_alloc_percpu(struct bpf_array *array)
static struct bpf_map *array_map_alloc(union bpf_attr *attr)
{
bool percpu = attr->map_type == BPF_MAP_TYPE_PERCPU_ARRAY;
+ int numa_node = bpf_map_attr_numa_node(attr);
struct bpf_array *array;
u64 array_size;
u32 elem_size;
/* check sanity of attributes */
if (attr->max_entries == 0 || attr->key_size != 4 ||
- attr->value_size == 0 || attr->map_flags)
+ attr->value_size == 0 || attr->map_flags & ~BPF_F_NUMA_NODE ||
+ (percpu && numa_node != NUMA_NO_NODE))
return ERR_PTR(-EINVAL);
if (attr->value_size > KMALLOC_MAX_SIZE)
@@ -77,7 +79,7 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr)
return ERR_PTR(-ENOMEM);
/* allocate all map elements and zero-initialize them */
- array = bpf_map_area_alloc(array_size);
+ array = bpf_map_area_alloc(array_size, numa_node);
if (!array)
return ERR_PTR(-ENOMEM);
@@ -87,6 +89,7 @@ static struct bpf_map *array_map_alloc(union bpf_attr *attr)
array->map.value_size = attr->value_size;
array->map.max_entries = attr->max_entries;
array->map.map_flags = attr->map_flags;
+ array->map.numa_node = numa_node;
array->elem_size = elem_size;
if (!percpu)
diff --git a/kernel/bpf/devmap.c b/kernel/bpf/devmap.c
index 18a72a8add43..67f4f00ce33a 100644
--- a/kernel/bpf/devmap.c
+++ b/kernel/bpf/devmap.c
@@ -80,7 +80,7 @@ static struct bpf_map *dev_map_alloc(union bpf_attr *attr)
/* check sanity of attributes */
if (attr->max_entries == 0 || attr->key_size != 4 ||
- attr->value_size != 4 || attr->map_flags)
+ attr->value_size != 4 || attr->map_flags & ~BPF_F_NUMA_NODE)
return ERR_PTR(-EINVAL);
dtab = kzalloc(sizeof(*dtab), GFP_USER);
@@ -93,6 +93,7 @@ static struct bpf_map *dev_map_alloc(union bpf_attr *attr)
dtab->map.value_size = attr->value_size;
dtab->map.max_entries = attr->max_entries;
dtab->map.map_flags = attr->map_flags;
+ dtab->map.numa_node = bpf_map_attr_numa_node(attr);
err = -ENOMEM;
@@ -119,7 +120,8 @@ static struct bpf_map *dev_map_alloc(union bpf_attr *attr)
goto free_dtab;
dtab->netdev_map = bpf_map_area_alloc(dtab->map.max_entries *
- sizeof(struct bpf_dtab_netdev *));
+ sizeof(struct bpf_dtab_netdev *),
+ dtab->map.numa_node);
if (!dtab->netdev_map)
goto free_dtab;
@@ -344,7 +346,8 @@ static int dev_map_update_elem(struct bpf_map *map, void *key, void *value,
if (!ifindex) {
dev = NULL;
} else {
- dev = kmalloc(sizeof(*dev), GFP_ATOMIC | __GFP_NOWARN);
+ dev = kmalloc_node(sizeof(*dev), GFP_ATOMIC | __GFP_NOWARN,
+ map->numa_node);
if (!dev)
return -ENOMEM;
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
index 4fb463172aa8..47ae748c3a49 100644
--- a/kernel/bpf/hashtab.c
+++ b/kernel/bpf/hashtab.c
@@ -18,6 +18,9 @@
#include "bpf_lru_list.h"
#include "map_in_map.h"
+#define HTAB_CREATE_FLAG_MASK \
+ (BPF_F_NO_PREALLOC | BPF_F_NO_COMMON_LRU | BPF_F_NUMA_NODE)
+
struct bucket {
struct hlist_nulls_head head;
raw_spinlock_t lock;
@@ -138,7 +141,8 @@ static int prealloc_init(struct bpf_htab *htab)
if (!htab_is_percpu(htab) && !htab_is_lru(htab))
num_entries += num_possible_cpus();
- htab->elems = bpf_map_area_alloc(htab->elem_size * num_entries);
+ htab->elems = bpf_map_area_alloc(htab->elem_size * num_entries,
+ htab->map.numa_node);
if (!htab->elems)
return -ENOMEM;
@@ -233,6 +237,7 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
*/
bool percpu_lru = (attr->map_flags & BPF_F_NO_COMMON_LRU);
bool prealloc = !(attr->map_flags & BPF_F_NO_PREALLOC);
+ int numa_node = bpf_map_attr_numa_node(attr);
struct bpf_htab *htab;
int err, i;
u64 cost;
@@ -248,7 +253,7 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
*/
return ERR_PTR(-EPERM);
- if (attr->map_flags & ~(BPF_F_NO_PREALLOC | BPF_F_NO_COMMON_LRU))
+ if (attr->map_flags & ~HTAB_CREATE_FLAG_MASK)
/* reserved bits should not be used */
return ERR_PTR(-EINVAL);
@@ -258,6 +263,9 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
if (lru && !prealloc)
return ERR_PTR(-ENOTSUPP);
+ if (numa_node != NUMA_NO_NODE && (percpu || percpu_lru))
+ return ERR_PTR(-EINVAL);
+
htab = kzalloc(sizeof(*htab), GFP_USER);
if (!htab)
return ERR_PTR(-ENOMEM);
@@ -268,6 +276,7 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
htab->map.value_size = attr->value_size;
htab->map.max_entries = attr->max_entries;
htab->map.map_flags = attr->map_flags;
+ htab->map.numa_node = numa_node;
/* check sanity of attributes.
* value_size == 0 may be allowed in the future to use map as a set
@@ -346,7 +355,8 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
err = -ENOMEM;
htab->buckets = bpf_map_area_alloc(htab->n_buckets *
- sizeof(struct bucket));
+ sizeof(struct bucket),
+ htab->map.numa_node);
if (!htab->buckets)
goto free_htab;
@@ -689,7 +699,8 @@ static struct htab_elem *alloc_htab_elem(struct bpf_htab *htab, void *key,
atomic_dec(&htab->count);
return ERR_PTR(-E2BIG);
}
- l_new = kmalloc(htab->elem_size, GFP_ATOMIC | __GFP_NOWARN);
+ l_new = kmalloc_node(htab->elem_size, GFP_ATOMIC | __GFP_NOWARN,
+ htab->map.numa_node);
if (!l_new)
return ERR_PTR(-ENOMEM);
}
diff --git a/kernel/bpf/lpm_trie.c b/kernel/bpf/lpm_trie.c
index b09185f0f17d..1b767844a76f 100644
--- a/kernel/bpf/lpm_trie.c
+++ b/kernel/bpf/lpm_trie.c
@@ -244,7 +244,8 @@ static struct lpm_trie_node *lpm_trie_node_alloc(const struct lpm_trie *trie,
if (value)
size += trie->map.value_size;
- node = kmalloc(size, GFP_ATOMIC | __GFP_NOWARN);
+ node = kmalloc_node(size, GFP_ATOMIC | __GFP_NOWARN,
+ trie->map.numa_node);
if (!node)
return NULL;
@@ -405,6 +406,8 @@ static int trie_delete_elem(struct bpf_map *map, void *key)
#define LPM_KEY_SIZE_MAX LPM_KEY_SIZE(LPM_DATA_SIZE_MAX)
#define LPM_KEY_SIZE_MIN LPM_KEY_SIZE(LPM_DATA_SIZE_MIN)
+#define LPM_CREATE_FLAG_MASK (BPF_F_NO_PREALLOC | BPF_F_NUMA_NODE)
+
static struct bpf_map *trie_alloc(union bpf_attr *attr)
{
struct lpm_trie *trie;
@@ -416,7 +419,8 @@ static struct bpf_map *trie_alloc(union bpf_attr *attr)
/* check sanity of attributes */
if (attr->max_entries == 0 ||
- attr->map_flags != BPF_F_NO_PREALLOC ||
+ !(attr->map_flags & BPF_F_NO_PREALLOC) ||
+ attr->map_flags & ~LPM_CREATE_FLAG_MASK ||
attr->key_size < LPM_KEY_SIZE_MIN ||
attr->key_size > LPM_KEY_SIZE_MAX ||
attr->value_size < LPM_VAL_SIZE_MIN ||
@@ -433,6 +437,7 @@ static struct bpf_map *trie_alloc(union bpf_attr *attr)
trie->map.value_size = attr->value_size;
trie->map.max_entries = attr->max_entries;
trie->map.map_flags = attr->map_flags;
+ trie->map.numa_node = bpf_map_attr_numa_node(attr);
trie->data_size = attr->key_size -
offsetof(struct bpf_lpm_trie_key, data);
trie->max_prefixlen = trie->data_size * 8;
diff --git a/kernel/bpf/sockmap.c b/kernel/bpf/sockmap.c
index 39de541fbcdc..78b2bb9370ac 100644
--- a/kernel/bpf/sockmap.c
+++ b/kernel/bpf/sockmap.c
@@ -443,7 +443,9 @@ static struct smap_psock *smap_init_psock(struct sock *sock,
{
struct smap_psock *psock;
- psock = kzalloc(sizeof(struct smap_psock), GFP_ATOMIC | __GFP_NOWARN);
+ psock = kzalloc_node(sizeof(struct smap_psock),
+ GFP_ATOMIC | __GFP_NOWARN,
+ stab->map.numa_node);
if (!psock)
return ERR_PTR(-ENOMEM);
@@ -465,7 +467,7 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr)
/* check sanity of attributes */
if (attr->max_entries == 0 || attr->key_size != 4 ||
- attr->value_size != 4 || attr->map_flags)
+ attr->value_size != 4 || attr->map_flags & ~BPF_F_NUMA_NODE)
return ERR_PTR(-EINVAL);
if (attr->value_size > KMALLOC_MAX_SIZE)
@@ -481,6 +483,7 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr)
stab->map.value_size = attr->value_size;
stab->map.max_entries = attr->max_entries;
stab->map.map_flags = attr->map_flags;
+ stab->map.numa_node = bpf_map_attr_numa_node(attr);
/* make sure page count doesn't overflow */
cost = (u64) stab->map.max_entries * sizeof(struct sock *);
@@ -495,7 +498,8 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr)
goto free_stab;
stab->sock_map = bpf_map_area_alloc(stab->map.max_entries *
- sizeof(struct sock *));
+ sizeof(struct sock *),
+ stab->map.numa_node);
if (!stab->sock_map)
goto free_stab;
diff --git a/kernel/bpf/stackmap.c b/kernel/bpf/stackmap.c
index 31147d730abf..135be433e9a0 100644
--- a/kernel/bpf/stackmap.c
+++ b/kernel/bpf/stackmap.c
@@ -31,7 +31,8 @@ static int prealloc_elems_and_freelist(struct bpf_stack_map *smap)
u32 elem_size = sizeof(struct stack_map_bucket) + smap->map.value_size;
int err;
- smap->elems = bpf_map_area_alloc(elem_size * smap->map.max_entries);
+ smap->elems = bpf_map_area_alloc(elem_size * smap->map.max_entries,
+ smap->map.numa_node);
if (!smap->elems)
return -ENOMEM;
@@ -59,7 +60,7 @@ static struct bpf_map *stack_map_alloc(union bpf_attr *attr)
if (!capable(CAP_SYS_ADMIN))
return ERR_PTR(-EPERM);
- if (attr->map_flags)
+ if (attr->map_flags & ~BPF_F_NUMA_NODE)
return ERR_PTR(-EINVAL);
/* check sanity of attributes */
@@ -75,7 +76,7 @@ static struct bpf_map *stack_map_alloc(union bpf_attr *attr)
if (cost >= U32_MAX - PAGE_SIZE)
return ERR_PTR(-E2BIG);
- smap = bpf_map_area_alloc(cost);
+ smap = bpf_map_area_alloc(cost, bpf_map_attr_numa_node(attr));
if (!smap)
return ERR_PTR(-ENOMEM);
@@ -91,6 +92,7 @@ static struct bpf_map *stack_map_alloc(union bpf_attr *attr)
smap->map.map_flags = attr->map_flags;
smap->n_buckets = n_buckets;
smap->map.pages = round_up(cost, PAGE_SIZE) >> PAGE_SHIFT;
+ smap->map.numa_node = bpf_map_attr_numa_node(attr);
err = bpf_map_precharge_memlock(smap->map.pages);
if (err)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index b8cb1b3c9bfb..9378f3ba2cbf 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -105,7 +105,7 @@ static struct bpf_map *find_and_alloc_map(union bpf_attr *attr)
return map;
}
-void *bpf_map_area_alloc(size_t size)
+void *bpf_map_area_alloc(size_t size, int numa_node)
{
/* We definitely need __GFP_NORETRY, so OOM killer doesn't
* trigger under memory pressure as we really just want to
@@ -115,12 +115,13 @@ void *bpf_map_area_alloc(size_t size)
void *area;
if (size <= (PAGE_SIZE << PAGE_ALLOC_COSTLY_ORDER)) {
- area = kmalloc(size, GFP_USER | flags);
+ area = kmalloc_node(size, GFP_USER | flags, numa_node);
if (area != NULL)
return area;
}
- return __vmalloc(size, GFP_KERNEL | flags, PAGE_KERNEL);
+ return __vmalloc_node_flags_caller(size, numa_node, GFP_KERNEL | flags,
+ __builtin_return_address(0));
}
void bpf_map_area_free(void *area)
@@ -309,10 +310,11 @@ int bpf_map_new_fd(struct bpf_map *map)
offsetof(union bpf_attr, CMD##_LAST_FIELD) - \
sizeof(attr->CMD##_LAST_FIELD)) != NULL
-#define BPF_MAP_CREATE_LAST_FIELD inner_map_fd
+#define BPF_MAP_CREATE_LAST_FIELD numa_node
/* called via syscall */
static int map_create(union bpf_attr *attr)
{
+ int numa_node = bpf_map_attr_numa_node(attr);
struct bpf_map *map;
int err;
@@ -320,6 +322,10 @@ static int map_create(union bpf_attr *attr)
if (err)
return -EINVAL;
+ if (numa_node != NUMA_NO_NODE &&
+ (numa_node >= nr_node_ids || !node_online(numa_node)))
+ return -EINVAL;
+
/* find map type and init map: hashtable vs rbtree vs bloom vs ... */
map = find_and_alloc_map(attr);
if (IS_ERR(map))
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 09:09:01 +0100